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ACCOUNTS RECEIVABLE, NARRATIVE (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2015
Receivables [Abstract] |  |
Recoveries of previously written-off accounts receivable | $ 112,417 |
Foreign trade accounts receivable, denominated in US dollars, percentage | 14.00% | 5.00%

X
- Definition Foreign accounts receivable denominated in US dollars + References No definition available. + Details
Name: | koss_ForeignaccountsreceivabledenominatedinUSdollars
Namespace Prefix: | koss_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of recoveries of receivables doubtful of collection that were previously charged off. + References No definition available. + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_ReceivablesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration